25421130 has 48 divisors (see below), whose sum is σ = 75538944. Its totient is φ = 5810400.

The previous prime is 25421129. The next prime is 25421161. The reversal of 25421130 is 3112452.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19546 + ... + 20805.

It is an arithmetic number, because the mean of its divisors is an integer number (1573728).

Almost surely, 2^25421130 is an apocalyptic number.

25421130 is an abundant number, since it is smaller than the sum of its proper divisors (50117814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25421130 is a wasteful number, since it uses less digits than its factorization.

25421130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40371 (or 40368 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25421130 is about 5041.9371277318. The cubic root of 25421130 is about 294.0344954665.

Adding to 25421130 its reverse (3112452), we get a palindrome (28533582).

The spelling of 25421130 in words is "twenty-five million, four hundred twenty-one thousand, one hundred thirty".